CAS-004 Exam Dumps | The following messages are displayed when a VPN client is attempting to connect to an OpenVPN server:

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Question 365/378

The following messages are displayed when a VPN client is attempting to connect to an OpenVPN server:
OpenSSL: error: 140760FC:SSL routines: SSL23_GET_CLIENT_HELLO: unknown
protocol'
TLS_ERROR: BIO read tls_read_plaintext error'
TLS_ERROR: TLS object->incoming plaintext read error'
TLS_ERROR: TLS handshake failed'
SIGUSR1 [soft, tls_error] received, client_instance restarting'
Which of the following best explains the cause of these messages?

A. The server is unreachable to the client and a connection cannot be established.

B. The client is using LibreSSL libraries while the server is using OpenSSL libraries.

C. A TLS version mismatch exists between the client and the server.

D. The client is attempting to establish an unencrypted connection with the server.

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